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  1. J

    C programming code question!

    What do you mean it won't record?
  2. J

    Worlds smallest V12 engine

    you can do mill work on your lathe, not that he did, but it's been done since the early 40's. Very interesting, I will have to share this with a few of my buddies. They appreciate hard work.
  3. J

    pwm to control a dc motor

    I been watching this thread now for a while waiting for an explanation. Light bulb just went off in my head, I understand where you're going with this now.
  4. J

    What size cap do I need?

    why wouldn't you want to put it here like this?
  5. J

    Welcome to a new moderator!

    I don't believe you! :cool:
  6. J

    CarPC wake on AC plug

    Yeah I am positive. Someone else can back me up if they want, but steve taught me this little trick a while back. I should add that relay may not be the best option here because of contact bounce, but maybe an optocoupler or something similar. I just mentioned relay, because most people know how...
  7. J

    CarPC wake on AC plug

    No, the resistor needs to be in series with the cap. As the cap is effectively a short when power is supplied the NEG side of the cap will see 12V, as the cap charges, the NEG side of the cap voltage will fall eventually close to ground. You will only need a short pulse, like a key press, which...
  8. J

    CarPC wake on AC plug

    All you need to do is short the leads together of a key. see here A key press is recognized when the circuit to that key is closed, think two metal pads, when you press the key, they connect. When you release, they disconnect. The keyboard controller will do the rest. I am thinking something...
  9. J

    CarPC wake on AC plug

    What I was thinking is why would anyone want to hide a keyboard in their car, but I guess if you hacked it up into the internals, it would be plenty small enough. There is a youtube video on hacking up a keyboard into the good parts and shows you how to simulate key presses. I still like the...
  10. J

    CarPC wake on AC plug

    a hacked keyboard it is. But are you willing to tear apart and modify a laptop that is under warranty? could you simulate a mouse movement with a wireless usb mouse? Hack the interface and send it a fake pulse, you pay twenty bucks for the mini mouse and usb receiver. Hack the transmitter to...
  11. J

    Seeking someone to build me a Wifi enabled device

    He just said you would need to sign a NDA. non-disclosure agreement. In other words, he wants to buy the services of an engineer and he will not be revealing anything to the public till his patent is in place. Now he just needs to name his price! Because that is after all, all that matters.
  12. J

    Hi I'm a developer!

    Welcome, we don't bite so ask away
  13. J

    C programming code question!

    Did you try what I recommended above?
  14. J

    C programming code question!

    wait a minute, post the whole code that is relevant to this line. Or you could just post the whole code. adxl345_write(DATA_FORMAT, RANGE_1); //Configure the Accelerometer for +/-8g edit: how is the adxl345_write function implemented? Can you post the code that is relevant to that function. I...
  15. J

    12V 4A supply for a peltier heat pump

    http://search.digikey.com/us/en/products/LT1084CT-12%23PBF/LT1084CT-12%23PBF-ND/888609
  16. J

    Welcome to a new moderator!

    You mean steve? I think resqueline is MIA and all but forgotten. Is it weird to miss someone on a forum board? Always learned a ton reading his post. edit: not to take anything away from other people, but it seems when we finally start getting a collective few who know lots we also lose a few to.
  17. J

    C programming code question!

    What is the table referring to when it says D1 and D0? Are you sure these aren't hardware jumpers or something similar? Links would help to possibly.
  18. J

    Capacitor not exploding with over voltage?

    You managed one victory, you're still alive. Seriously, be careful!!!
  19. J

    Wind turbine project, wiring, etc.

    Nah they make a gel pack deep cycle battery.
  20. J

    Wind turbine project, wiring, etc.

    yes You will never get 1200W out of a 500W alternator. You will eventually run your battery supply dead. If you are not using the power generated by the turbine and the battery is charged, then you will need to a shunt to bleed away the excess power being generated. If you plan on using a...
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